Home / 13,305.92-19,963.60-5,909.72

Finding the Fourth Proportional to 13,305.92, 19,963.60 and 5,909.72

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Solution

The fourth proportional to 13,305.92, 19,963.60 and 5,909.72 is: 8,866.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.92 : 19,963.60 = 5,909.72 : x
  2. Step 2: Convert to fraction form
    13,305.92/19,963.60 = 5,909.72/x
  3. Step 3: Cross multiply
    13,305.92x = 19,963.60 × 5,909.72
  4. Step 4: Simplify right side
    13,305.92x = 117,979,171.60
  5. Step 5: Solve for x
    x = 117,979,171.60/13,305.92
  6. Step 6: Final answer
    x = 8,866.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.